Conveying structure for packaging bags

Abstract

The utility model belongs to the technical field of packaging bag packaging mechanisms, and provides a conveying structure for packaging bags. The rotating platform is arranged on one side of the positioning piece, and a plurality of clamps are arranged on the rotating platform in the circumferential direction of the rotating center line of the rotating platform at intervals; the driving block is movably arranged above the rotating platform; and the conveying piece is arranged on one side of the positioning piece. Compared with the prior art, the clamping pieces can accurately grab and fix the independent units of the split packaging bag through switching between the unfolding state and the locking state, a mechanical shearing mechanism is not needed, and the modular packaging requirement is met; the positioning piece and the rotating platform cooperate to separate the packaging bags one by one and directionally convey the packaging bags, so that the traditional waste treatment process after shearing is omitted, and the production efficiency is remarkably improved; and the state of the clamping piece is controlled through the driving block, split bags of different sizes or shapes can be dynamically adapted, and the adaptability of the equipment to diversified packaging requirements is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging bag sealing mechanism, specifically relating to a transport structure for packaging bags. Background Technology

[0002] With the rapid development of the packaging industry, automated equipment is increasingly widely used in production lines. In existing technologies, automatic bagging machines typically use integrated continuous packaging bags as the packaging material. These bags are supplied in roll form. During the bagging process, the equipment fills the bag with material and then uses a shearing mechanism to cut individual bags from the continuous roll, completing the sealing operation.

[0003] However, this traditional one-piece packaging bag has the following significant drawbacks: 1. Structural limitations: The structure of a one-piece continuous packaging bag is designed as an indivisible unit, and its cutting position and length must be strictly matched to the cutting mechanism of the equipment. When it is necessary to adapt to different packaging requirements, the equipment needs to frequently adjust the cutting parameters, resulting in reduced production efficiency and difficulty in meeting the flexible production needs of multiple varieties and small batches; 2. Limitations of the cutting mechanism: Existing cutting mechanisms usually rely on mechanical blades or heat sealing devices to complete the cutting operation, and the process is complex and time-consuming. In high-speed production scenarios, the wear rate of the cutting mechanism is high, which can easily lead to a decrease in cutting accuracy and even cause problems such as damage to the edges of the packaging bag and poor sealing. In addition, the disposal of waste materials after cutting also increases equipment maintenance costs and energy consumption; 3. Lack of compatibility with split packaging bags: With the increasing market demand for split packaging bags (such as modular combination packaging, detachable structure packaging, etc.), the traditional one-piece packaging bag packaging method is no longer suitable. Split packaging bags are usually composed of multiple independent units, which need to be completely sealed through specific clamping, positioning and assembly processes. Existing automatic bagging machines lack dedicated transport and securing structures for individual bags, resulting in inefficient bagging operations and limiting their application in fields such as food and pharmaceuticals where packaging flexibility is crucial. 4. A conflict exists between production efficiency and adaptability: the cutting process for one-piece packaging bags requires additional workstations and time, while the bagging process for individual packaging bags typically involves more complex positioning and assembly steps.

[0004] In existing technologies, the equipment design does not fully consider the characteristics of split bags, which requires machine shutdown and adjustment when switching packaging modes, seriously affecting the overall efficiency of the production line. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a transportation structure for packaging bags in light of the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a transport structure for packaging bags is proposed, including: a positioning component, which is used to stack the packaging bags;

[0007] A rotating platform is disposed on one side of the positioning member. The rotating platform is provided with multiple clamping members spaced circumferentially along its own rotation center line. Each of the multiple clamping members has an unfolded state and a locked state. The unfolded state is used to receive or release the packaging bag, and the locked state is used to fix the packaging bag on the rotating platform.

[0008] A drive block, which is movably disposed above the rotating platform, is used to control the switching of two adjacent clamping members between the unfolded state and the locked state;

[0009] A transporter, disposed on one side of the positioning member, is used to transport the packaging bags individually from the positioning member to the clamping member in the unfolded state.

[0010] In one of the above-described conveying structures for packaging bags, the drive block includes a release position close to the rotating platform and a fixed position away from the rotating platform;

[0011] When the drive block is in the release position, it is used to put the clamping member in the unfolded state;

[0012] When the drive block is in the fixed position, it is used to put the clamping member in the locked state.

[0013] In one of the above-described transport structures for packaging bags, the clamping member includes:

[0014] A support base is provided on the rotating platform;

[0015] A swing arm is rotatably mounted on the support base via a pivot. The swing arm has a drive end and an execution end. The execution end moves against the rotating platform and is used to fix the packaging bag between the execution end and the rotating platform when the clamping member is in the locked state. The drive end moves against the drive block and is provided with an elastic element between itself and the rotating platform.

[0016] In the above-described conveying structure for packaging bags, four clamping members are equally spaced on the rotating platform, and the four clamping members are arranged sequentially along the rotation direction of the rotating platform.

[0017] In one of the above-described transport structures for packaging bags, the area of ​​the drive block facing the clamping member is greater than the coverage area between two adjacent drive ends and less than the coverage area between three adjacent drive ends.

[0018] In one of the above-described transport structures for packaging bags, the positioning element includes:

[0019] Support platform;

[0020] A plurality of guide posts are disposed on the upper surface of the support platform;

[0021] A guide sleeve corresponding to each of the guide posts is movably fitted onto the outer wall of the guide post via a bearing.

[0022] The pressing block has one end connected to the guide sleeve and the other end movably pressing against the edge of the packaging bags stacked on the support platform.

[0023] In one of the above-described transport structures for packaging bags, the transport component includes:

[0024] First support frame;

[0025] The first driving component is laterally connected to the first support frame;

[0026] The second driving component is driven to connect with the first driving component, and the first driving component is used to drive the second driving component to move laterally.

[0027] A connecting frame is driven to the second driving member, which is used to drive the connecting frame to move in the vertical direction;

[0028] Several suction cups are elastically connected to the connecting frame and are used to adsorb packaging bags on the positioning component;

[0029] A sensor, mounted on the connecting frame, is used to sense the distance the suction cup end moves.

[0030] The aforementioned conveying structure for packaging bags further includes a guide member disposed between the rotating platform and the positioning member, the guide member being used to guide the packaging bag placed on the clamping member when the clamping member is in the unfolded state.

[0031] In one of the above-described conveying structures for packaging bags, the guide member includes:

[0032] Second support frame;

[0033] The third driving component is vertically mounted on the second support frame;

[0034] A pneumatic gripper is driven and connected to the third driving component. The pneumatic gripper moves and abuts against the opposite sides of the packaging bag to guide the packaging bag.

[0035] The aforementioned conveying structure for packaging bags further includes:

[0036] A fourth driving component is disposed above the rotating platform, and the rotating platform is drivenly connected to the fourth driving component. The fourth driving component is used to drive the rotating platform to rotate.

[0037] The fifth driving component is vertically disposed above the rotating platform. The driving block is drivenly connected to the fifth driving component, and the fifth driving component is used to drive the driving block to move closer to or away from the rotating platform.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) The clamping component can accurately grab and fix the independent units of the split packaging bag by switching between unfolded / locked states, without relying on mechanical shearing mechanism, thus meeting the needs of modular packaging; the coordinated cooperation between the positioning component and the rotating platform enables the individual separation and directional conveying of the packaging bag, eliminating the waste disposal process after traditional shearing and significantly improving production efficiency; the state of the clamping component can be dynamically adapted to split bags of different sizes or shapes by controlling the drive block, enhancing the equipment's adaptability to diverse packaging needs.

[0040] (2) By switching between the release and fixed positions of the drive block, the control logic of the clamping component is optimized: Reduce mechanical wear: The movement of the drive block directly controls the state of the clamping component, replacing the complex actions of the traditional shearing mechanism, reducing the wear rate and maintenance cost of the equipment; Precise state switching: The precise control of the clamping component unfolding / locking is achieved by limiting the position (release / fixed), avoiding the problem of packaging bag damage caused by shearing error.

[0041] (3) The elastic element applies a thrust to the drive end, so that the execution end is pressed firmly onto the packaging bag; the swing arm is connected to the support base through the rotating shaft, which is simple in structure and wear-resistant, and adaptable to high-frequency gripping operations; the elastic contact between the execution end and the rotating platform enhances the gripping force of the clamping element on the edge of the packaging bag, and prevents the split bag from slipping off during rotation. Attached Figure Description

[0042] Figure 1 This is a perspective view of a transportation structure for packaging bags according to this utility model.

[0043] Figure 2 yes Figure 1 A three-dimensional view of the middle part of the structure.

[0044] In the diagram, 1. Positioning component; 2. Rotating platform; 3. Clamping component; 4. Drive block; 5. Transport component; 6. Support base; 7. Swing arm; 8. Drive end; 9. Actuating end; 10. Elastic component; 11. Support platform; 12. Guide column; 13. Guide sleeve; 14. Pressing block; 15. First support frame; 16. First drive component; 17. Second drive component; 18. Connecting frame; 19. Suction cup; 20. Sensor; 21. Guide component; 22. Second support frame; 23. Third drive component; 24. Pneumatic gripper; 25. Fourth drive component; 26. Fifth drive component; 27. Packaging bag. Detailed Implementation

[0045] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0047] like Figures 1 to 2 As shown, a conveying structure for packaging bags according to this utility model includes: a positioning component 1, a rotating platform 2, a driving block 4, and a conveying component 5.

[0048] Specifically, the positioning element 1 is used to stack the packaging bags 27; the rotating platform 2 is set on one side of the positioning element 1, and multiple clamping elements 3 are arranged circumferentially along the rotation center line of the rotating platform 2. Each clamping element 3 has an unfolded state and a locked state. The unfolded state is used to receive or release the packaging bags 27, and the locked state is used to fix the packaging bags 27 on the rotating platform 2; the driving block 4 is movably set above the rotating platform 2 and is used to control the switching between the unfolded state and the locked state of two adjacent clamping elements 3; the conveying element 5 is set on one side of the positioning element 1 and is used to transport the packaging bags 27 on the positioning element 1 individually to the clamping elements 3 in the unfolded state.

[0049] During operation, the conveyor 5 starts first, individually grabbing the packaging bag 27 from the positioning member 1 and transporting it to the clamping member 3 on the rotating platform 2, which is adjacent to the conveyor 5 and in an unfolded state. Preferably, the rotating platform 2 is provided with support rods corresponding one-to-one with the clamping member 3, which provide support for the packaging bag 27 and the workpiece before one end of the packaging bag 27 is fixed by the clamping member 3 and when the packaging bag 27 is filled with the workpiece, so as to keep the packaging bag 27 in a straight state when the rotating platform 2 rotates, which facilitates the subsequent bagging operation of the workpiece.

[0050] After the packaging bag 27 is placed, the drive block 4 drives the clamping component 3 to switch to the locking state, thus fixing the packaging bag 27 on the rotating platform 2. The rotating platform 2 moves along... Figure 1 The device rotates clockwise as shown from top to bottom, transporting the packaging bag 27 to the next process and transferring another clamping member 3 to a position adjacent to the conveyor 5. At this time, the drive block 4 controls the clamping member 3 to enter the unfolded state, and then the conveyor 5 transports another packaging bag 27 onto the clamping member 3. After that, the drive block 4 switches the clamping member 3 to the locked state, and repeats the above actions until the packaging process of the workpiece is completed.

[0051] In this embodiment, the clamping member 3 can accurately grasp and fix the independent units of the split packaging bag 27 by switching between unfolded and locked states, without relying on a mechanical cutting mechanism, thus meeting the needs of modular packaging. The coordinated operation of the positioning member 1 and the rotating platform 2 enables the individual separation and directional conveying of the packaging bag 27, eliminating the waste disposal process after traditional cutting and significantly improving production efficiency. By controlling the state of the clamping member 3 through the drive block 4, it can dynamically adapt to split bags of different sizes or shapes, enhancing the equipment's adaptability to diverse packaging needs.

[0052] Preferably, the drive block 4 includes a release position close to the rotating platform 2 and a fixed position away from the rotating platform 2; when the drive block 4 is in the release position, it is used to make the clamping member 3 in an unfolded state; when the drive block 4 is in the fixed position, it is used to make the clamping member 3 in a locked state.

[0053] In this solution, the control logic of the clamping component 3 is optimized by switching between the release and fixed positions of the drive block 4: Reduced mechanical wear: The movement of the drive block 4 directly controls the state of the clamping component 3, replacing the complex actions of the traditional shearing mechanism, thus reducing equipment wear rate and maintenance costs. Precise state switching: Precise control of the clamping component 3's unfolding / locking is achieved through position limitation (release / fixed), avoiding damage to the packaging bag 27 caused by shearing errors.

[0054] Furthermore, the clamping member 3 includes: a support base 6, which is disposed on the rotating platform 2; a swing arm 7, which is rotatably disposed on the support base 6 via a rotating shaft. The swing arm 7 has a driving end 8 and an actuating end 9. The actuating end 9 is movable against the rotating platform 2 and is used to fix the packaging bag 27 between the actuating end 9 and the rotating platform 2 when the clamping member 3 is in the locked state. The driving end 8 is movable against the driving block 4 and an elastic element 10 is disposed between it and the rotating platform 2.

[0055] The elastic element 10 is preferably a spring. During operation, the drive block 4 moves to the release position, pushing the drive end 8 to overcome the elastic force of the elastic element 10, causing the swing arm 7 to rotate relative to the support base 6, thereby separating the actuator end 9 from the rotating platform 2, and finally putting the clamping member 3 into the unfolded state. After the packaging bag 27 is placed on the clamping member 3, the drive block 4 moves to the fixed position. At this time, the elastic element 10 resumes its extension without external force, and pushes the swing arm 7 to rotate in the opposite direction relative to the support base 6 through elastic force, so that the actuator end 9 abuts against the rotating platform 2 again, and finally switches the clamping member 3 to the locked state.

[0056] In this embodiment, the elastic element 10 applies a pushing force to the driving end 8, causing the actuating end 9 to be firmly pressed onto the packaging bag 27. The swing arm 7 is connected to the support base 6 via a rotating shaft, featuring a simple and wear-resistant structure suitable for high-frequency gripping operations. The elastic contact between the actuating end 9 and the rotating platform 2 enhances the gripping force of the clamping element 3 on the edge of the packaging bag 27, preventing the packaging bag 27 from slipping off during rotation.

[0057] It is worth mentioning that four clamping members 3 are equally spaced on the rotating platform 2, and the four clamping members 3 are arranged sequentially along the rotation direction of the rotating platform 2.

[0058] When sealing a workpiece, the process typically involves four sequential steps: first, fixing the packaging bag 27 to the rotating platform 2 using clamping members 3; second, receiving the workpiece; third, sealing the packaging bag 27; and fourth, removing the sealed packaging bag 27. In this embodiment, four clamping members 3 are arranged sequentially along the rotation direction of the rotating platform 2, corresponding to the four steps described above, to achieve a cyclical operation mode of "grabbing → fixing → rotating → releasing," effectively reducing equipment idle time and improving overall work efficiency.

[0059] Furthermore, the area of ​​the drive block 4 facing the clamping member 3 is greater than the coverage area between two adjacent drive ends 8, and less than the coverage area between three adjacent drive ends 8.

[0060] According to the above steps, in the first and fourth steps, two clamping components 3 need to switch to the unfolded state simultaneously: in the first step, switching to the unfolded state is used to receive new packaging bags 27; in the fourth step, switching to the unfolded state is used to release the already sealed packaging bags 27. Through the optimized design of the area of ​​the drive block 4 (i.e., the area of ​​the drive block 4 is larger than the area enclosed by two adjacent drive ends 8 but smaller than the area enclosed by three drive ends 8), it can be ensured that the drive block 4 acts on two target clamping components 3 simultaneously when moving, realizing batch state switching control and significantly improving operation efficiency.

[0061] It is worth mentioning that the positioning component 1 includes: a support platform 11; a plurality of guide posts 12, which are disposed on the upper surface of the support platform 11; a guide sleeve 13 corresponding to each of the guide posts 12, which is movably fitted onto the outer side wall of the guide post 12 via bearings; and a pressing block 14, one end of which is connected to the guide sleeve 13, and the other end of which is movably pressed against the edge of the packaging bag 27 stacked on the support platform 11.

[0062] Due to the material properties and thickness of the stacked packaging bags 27, when the conveyor 5 grasps a single packaging bag 27, the bag 27 may be difficult to separate from the bags 27 below it due to adhesion. To solve this problem, the pressing block 14 is configured to: when the conveyor 5 grasps the topmost packaging bag 27 on the support platform 11, the edge of the packaging bag 27 is subjected to pressure from the pressing block 14; and the grasping position of the conveyor 5 applies a force to the packaging bag 27 in the opposite direction to that of the pressing block 14. In this case, the conveyor 5 needs to cause the topmost packaging bag 27 to undergo elastic deformation in order to detach from the pressure of the pressing block 14 and separate from the remaining packaging bags 27 on the support platform 11. Since the adhesion between the lower packaging bag 27 and the uppermost packaging bag 27 is insufficient to overcome the elastic deformation of the material, the lower packaging bag 27 cannot deform synchronously with the uppermost packaging bag 27. Therefore, under the pressure of the pressing block 14, the lower packaging bag 27 cannot detach from the support platform 11 at the same time as the uppermost packaging bag 27, thereby achieving the separation of the packaging bags 27 layer by layer, and ultimately enabling the transport component 5 to accurately grab a single packaging bag 27.

[0063] The design of the guide sleeve 13 and guide post 12 allows the pressing block 14 to automatically adjust its position relative to the support platform 11 according to the height of the stacked packaging bags 27 on the support platform 11. The bearing configuration further enhances the smoothness of the pressing block 14's adjustment, ensuring that even when the number of stacked packaging bags 27 on the support platform 11 decreases, the pressing block 14 can adjust its position in real time, thereby maintaining effective pressure on the topmost packaging bag 27 and ensuring stable gripping of individual packaging bags 27 by the transport component 5.

[0064] It is worth mentioning that the transport component 5 includes: a first support frame 15; a first drive component 16, which is laterally connected to the first support frame 15; a second drive component 17, which is drivenly connected to the first drive component 16, and the first drive component 16 is used to drive the second drive component 17 to move laterally; a connecting frame 18, which is drivenly connected to the second drive component 17, and the second drive component 17 is used to drive the connecting frame 18 to move vertically; a plurality of suction cups 19, which are elastically connected to the connecting frame 18, and are used to adsorb the packaging bag 27 on the positioning component 1; and a sensor 20, which is disposed on the connecting frame 18, and is used to sense the distance moved by the end of the suction cup 19.

[0065] The first driving component 16 and the second driving component 17 are preferably cylinders; however, the first driving component 16 can also be a linear guide rail. The first driving component 16 and the second driving component 17 together form a two-dimensional conveying platform, driving the connecting frame 18 to move in both the lateral and vertical directions between the positioning component 1 and the rotating platform 2. Multiple suction cups 19 are installed on the connecting frame 18, which, through connection to an air source, enable the adsorption operation of the packaging bag 27.

[0066] As the suction cup 19 continuously picks up the packaging bag 27 from the positioning member 1, the position where the suction cup 19 contacts the packaging bag 27 will vary each time it descends due to potential height differences or slight tilting of the stacked packaging bags 27. However, after the suction cup 19 completes the adsorption action, the distance between the end of the suction cup 19 away from the packaging bag 27 and the connecting frame 18 remains constant. This characteristic is confirmed by real-time detection of this distance by the sensor 20, thereby ensuring that the suction cup 19 can stably and firmly adsorb the packaging bag 27 each time, preventing gripping failure due to poor adsorption.

[0067] The elastic connection structure between the suction cup 19 and the connecting frame 18 is preferably a spring assembly, specifically including a guide rod, a spring sleeve, and a compression spring. The suction cup 19 slides into the mounting hole on the connecting frame 18 via the guide rod. The compression spring is fitted outside the guide rod and located inside the spring sleeve, with one end abutting against the connecting frame 18 and the other end acting on the back of the suction cup 19. This structure allows the suction cup 19 to have a certain axial floating when it contacts the packaging bag 27, to adapt to the surface of the packaging bag 27 at different heights. At the same time, after adsorption is completed, the spring's restoring force allows the suction cup 19 to return to its initial position, ensuring the consistency of the relative position between it and the connecting frame 18.

[0068] The above structural design not only improves the adsorption reliability of the suction cup 19 under complex working conditions, but also enhances the stability and adaptability of the entire conveying system.

[0069] It is worth mentioning that this solution also includes a guide member 21 disposed between the rotating platform 2 and the positioning member 1. The guide member 21 is used to guide the packaging bag 27 placed on the clamping member 3 when the clamping member 3 is in the unfolded state.

[0070] Furthermore, the guide member 21 includes: a second support frame 22; a third drive member 23, which is vertically mounted on the second support frame 22; and a pneumatic gripper 24, which is drivenly connected to the third drive member 23. The pneumatic gripper 24 moves against the opposite sides of the packaging bag 27 to perform a guiding operation on the packaging bag 27.

[0071] The third driving component 23 is preferably a cylinder. When the conveying component 5 transports the packaging bag 27 onto the clamping component 3 in its unfolded state, the two clamping blocks of the pneumatic gripper 24 are located on opposite sides of the packaging bag 27. At this time, the third driving component 23 drives the pneumatic gripper 24 to move, causing the packaging bag 27 to enter between the two clamping blocks. Subsequently, the clamping blocks move towards each other, pushing the packaging bag 27 to a predetermined position, completing the positioning and guiding operation.

[0072] This solution also includes: a fourth driving component 25, which is disposed above the rotating platform 2, and the rotating platform 2 is driven to be connected to the fourth driving component 25. The fourth driving component 25 is used to drive the rotating platform 2 to rotate; and a fifth driving component 26, which is erected above the rotating platform 2. The driving block 4 is driven to be connected to the fifth driving component 26. The fifth driving component 26 is used to drive the driving block 4 to move closer to or further away from the rotating platform 2.

[0073] The fourth drive component 25 is preferably a combination of a motor and a reducer, used to drive the rotating platform 2 to achieve rotational operation. The fifth drive component 26 is preferably a cylinder, which can be fixedly mounted on the first support frame 15, or the fifth drive component 26 can be mounted above the rotating platform 2 through an additional support frame, thereby realizing the switching of the drive block 4 between the released position and the fixed position.

[0074] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0076] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A transport structure for packaging bags, characterized in that, include: Positioning elements for stacking the packaging bags; A rotating platform is disposed on one side of the positioning member. The rotating platform is provided with multiple clamping members spaced circumferentially along its own rotation center line. Each of the multiple clamping members has an unfolded state and a locked state. The unfolded state is used to receive or release the packaging bag, and the locked state is used to fix the packaging bag on the rotating platform. A drive block, which is movably disposed above the rotating platform, is used to control the switching of two adjacent clamping members between the unfolded state and the locked state; A transporter, disposed on one side of the positioning member, is used to transport the packaging bags individually from the positioning member to the clamping member in the unfolded state.

2. The transport structure for packaging bags as described in claim 1, characterized in that, The drive block includes a release position close to the rotating platform and a fixed position away from the rotating platform; When the drive block is in the release position, it is used to put the clamping member in the unfolded state; When the drive block is in the fixed position, it is used to put the clamping member in the locked state.

3. The transport structure for packaging bags as described in claim 1, characterized in that, The clamping element includes: A support base is provided on the rotating platform; A swing arm is rotatably mounted on the support base via a pivot. The swing arm has a drive end and an execution end. The execution end moves against the rotating platform and is used to fix the packaging bag between the execution end and the rotating platform when the clamping member is in the locked state. The drive end moves against the drive block and is provided with an elastic element between itself and the rotating platform.

4. The transport structure for packaging bags as described in claim 1, characterized in that, The rotating platform is provided with four clamping members at equal intervals, and the four clamping members are arranged sequentially along the rotation direction of the rotating platform.

5. A transport structure for packaging bags as described in claim 3, characterized in that, The area of ​​the drive block facing the clamping member is greater than the coverage area between two adjacent drive ends and less than the coverage area between three adjacent drive ends.

6. A transport structure for packaging bags as described in claim 1, characterized in that, The positioning element includes: Support platform; A plurality of guide posts are disposed on the upper surface of the support platform; A guide sleeve corresponding to each of the guide posts is movably fitted onto the outer wall of the guide post via a bearing. The pressing block has one end connected to the guide sleeve and the other end movably pressing against the edge of the packaging bags stacked on the support platform.

7. A transport structure for packaging bags as described in claim 1, characterized in that, The transported items include: First support frame; The first driving component is laterally connected to the first support frame; The second driving component is driven to connect with the first driving component, and the first driving component is used to drive the second driving component to move laterally. A connecting frame is driven to the second driving member, which is used to drive the connecting frame to move in the vertical direction; Several suction cups are elastically connected to the connecting frame and are used to adsorb packaging bags on the positioning component; A sensor, mounted on the connecting frame, is used to sense the distance the suction cup end moves.

8. A transport structure for packaging bags as described in claim 1, characterized in that, It also includes a guide member disposed between the rotating platform and the positioning member, the guide member being used to guide the packaging bag placed on the clamping member when the clamping member is in the unfolded state.

9. A transport structure for packaging bags as described in claim 8, characterized in that, The guiding element includes: Second support frame; The third driving component is vertically mounted on the second support frame; A pneumatic gripper is driven and connected to the third driving component. The pneumatic gripper moves and abuts against the opposite sides of the packaging bag to guide the packaging bag.

10. A transport structure for packaging bags as described in claim 1, characterized in that, Also includes: A fourth driving component is disposed above the rotating platform, and the rotating platform is drivenly connected to the fourth driving component. The fourth driving component is used to drive the rotating platform to rotate. The fifth driving component is vertically disposed above the rotating platform. The driving block is drivenly connected to the fifth driving component, and the fifth driving component is used to drive the driving block to move closer to or away from the rotating platform.

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